#include <iostream>
#include "Sales_item.h"
int main()
{
	Sales_item book;
	std::cout << "请输入销售记录：" << std::endl;
	while (std::cin >> book)
	{
		std::cout << "ISBN、售出本数、销售额和平均售价为 " << book << std::endl;
	}
	return 0;
}